Energy Efficient Windows for Maryland Climate Zone 4A Homes
How Maryland Weather Exposes Weak Windows Because Maryland falls in climate zone 4A, windows have to handle muggy summer air, winter heat loss, and the kind of temperature swings that make drafts and condensation obvious fast. That weather pattern is hard on older windows. Even if the frame is still sound, air leakage, poor glazing, or a tired seal can drive up comfort problems and utility costs. The housing stock makes the decision more complicated. Older Maryland